Sudoku Extra

Enjoy the classical Sudoku game with additional features: You can choose from 4 difficulty levels: Easy, Medium, Hard, Very Hard.Use the notes to write down possible solutions.You can delete notes or mistakes with the Erase button.Can change symbols for more fun and challenge. There are 16 categories to try out. You can unlock symbols with 100 coins. Each game you win gives you 25 coins.The Get Hi…